Engine-starter.



J. H. RICHARDS,

ENGINE snmn. I A PLICKTION F|LED-JULY 2|, I915 1,227,003. Patented May 22, 1917.

3 SHEETS-SHEET I- 'Fzy J.

. INVENTOR. WITNESSES;

g) Jumus H. PICHAEDS.

- ATTORN .I. H. RICHARDS.

ENGINE STARTER.

APPLICATION FILED JULY 21.1915.

Patent-ed May 22, 1917.

3 SHEETS-SHEET if.

F Ly. 5.

INVENTOR. Jula us ILFPICHAEDS.

327T AfTOR KC WITNESSES: q.

J. H. RICHARDS.

ENGINE STARTER.

APPLICATION FILED JULY 21.1915.

3 SHEETSSHEET 3.

2 Fly. 0.

WITNESSES IN VENTOR. V

- W JULIUS H. QICH DSL 62 ,W ATTORNEY Patented May 22, 1917.

B ag.

UNITED STATES PATENT. OFFICE.

JULIUS H. Normans;

OF ESSEX, NEW JERSEY, ASSIGNOR TO SPLITDORF ELECTBICAIJ COMPANY, OF: NEWARK, NEW JERSEY.

ENGINE-STARTER.

'1 'u all whoin it mag concern:

Be it known tllal; I,.J.L'L1US H. RIGHAnDs, a citizen of the United States, residing at Newark, in the county of Essex and State of New'Jersey, have'invented certain new and useful" Improvements in Engine-Startcrs, of which the following isa specification.

This invention relate's'to means for starting internal combustion engines by means of. an electric' motor receiving its power from anexternal sou'rce,;such as. a storage hatteryand also includes means for apply ing-s'aid externalsource of poworto the electric motor and for disconnecting the some therefrom.

{Another object of my ini'cntion to pro- .vi de positive means for engaging the startin motor .to the engine and. to provide (pluck. and efliclent means for disconnecting t e. start1n n otor fromLIt-he-engme' when the engine" girls to opcmte-under its. own ,power. a

Aiurth'er object isto prouide means for removing the source (if-power from'the clectric motor .when the-engine begins to opcrate nnderits ownpower even though the December 14,' 1914, I have shown and" power applying means is still retained in the inisiftibnwhich causes the motor to begin its functions, thus" putting the electric. motor under control oftheeepgine and effecting av great savingin power.

' A'n-important; feature of my invention-is tho inethod of mounting and operating the gear hich'cngagms the engine- In my coinpanion application, Scrial- No; 877146, filed .cla inied liroadlyflthe fundamental principles tofwhichmy presentapplication relates. In my present appli'jation, as well as in the mi-c t a iplicat on. the armature shaft of the elvcll'ic lnotor,

is hollow and supported in suitable hearings. thus allowing thcarmatore to {remain III a permanent position wi'thin its field \\"hercl1y..it is always iu-position to exert its greatest torque -.l-assing through the hollow shaft and extending be-' 2 tween the hearing and plates of the motor is a second shaftr' One end of the. hollow shaft driringly carries a gear: whi'ch however, is opcratively ronnectcd to the Second.

Specification Letters Patent.

shaft. This provides a very uniquear range mentand gives an even more compact'gumt tion 'will' be readily understood by persons skilled in the art from a consideration 'of the following description, taken in cornice-- Patented May 22, 1917. Application flied. Iu1y21, 1915. Serial No. 41,203.

lion with the drawings, wherein like nu'-' morals refer to corresponding parts in the various figures.-

Figure 1 is a side elevation of the electliu motor, preferably of the series type", mounted on a portion of the engine-frame work, with the driving gear and switchinginechanismon their normal of idle pos'i-- tion's: V

Fig. 2 is a' top plan view of Fig.1. Fig. 3 is a side elei'ation, similar 1 but with the driving mechanism in their-woi iting positions Fig. 4 is a top plan view of Fig. v Fig. 5 is an end view of a portion oi-the switching mechanism connecting a mechanical element of the electrical circuit with the internal shaft. of the motor.

'Fig. 6 is aside view of Fig; 5.

Fig; 7 is an end view of one of the switch supports.

Fig. 8 i

s a side View of Fig. 7.

sating element of the switch. i

Fig. 11 is 9. Fi -.9 ear andswitching gear and motor shaft with the internal shaft shown in full. 7

Fig. 12 is-'ancnd view of Fig. '11.

Fig. 13 is adia' gram of='the electrical; circuit, including a part of the Snitching mechanism, the motor and source of power', said switch beingj shown in full linesiinla' position just as the gears go into cngag'e- 3 an obstrnclnent and iu dotted lines should tiqn be met with by the driving gear.

. Referring-now particularly to the draw ricmotor,-

ings, 1 lS' it field frame' of an elect within which .is mounted an armature? on i shaft '3 supported by hearings 4 errieci by endplates 6 and 7. The ec ric and 5,

3. 0 Fig.4) is a sectional new of a comp en-"- groovtes22 to co n iirhiehifollows. t and-:preferahlyinou -56 'lmlssgfh'and 27, which 1 88 .th

25r-I'1hc1rnd; 26 carries 'a -s i, "andgmlr ama s a, switch; contact 29, the

. :mns pfi which are somewhat shorter than those of contacti28. 1 Both 'of these switch motor structure as above set forth 'is inounted on some part of the frame work of the engine or on a bracket 8, by means of bolts 13, the bracket being attached to, the engine .5 frame by any suitable means, such as bolts "teeth, cut integral with the'flyqvheel or at-,

tached thereto.- It'is to be understood that the fiy-wheel 11'; ha's'suitahle gears out thereon or fastened thereto. i

., The armature use a is 116mm; Carried 2'6 within the hollow portion is'a seoond shaft v 14, which extendsat'both endsjof the clecf motor-"between the" end-bearing plates.

The armature shaft. 3 'hasi'f'an'extension 15 beyond the bearingtand this extension has splines 16 formed thereon .lwhilethe ex 't'remeehd 17 is reduced; somewhat, in diam-' .eter -t6 make-nr a-for-span;1s. Theouter-end of weepin 1s jrest's against the seller wh h is p e kl; so tension-=15, bym'ean's' of-Ia m-QO. 'Mounted on the splipes 1 6-'i s affi'eafl" 521,":which has hothfcnds of hgbasc. of-the 1n in; a.-p'ermafinals he operation neut posltionhndzn of the gear. g-The'fu v l ee '45 is a "which n'closes j-iswitching mechanism j Elf- 11m eoverfof'said;

'g-the parts inf their ari'ous. lations. itching nieohanisr'ng fcol npi'ises two roughthe b'oxcontact 28 contacts arelinsuzla ted' in' any suitable manblades. 30 land .31. are securely attached to the-sides of the-boxnn'd prbperlyiinsulatcd therefrom, contact-studs 32 nnd 33 being used 'for. connecting-[to thel switch blades areconi' ected for the purpose 'of operating b said; lines.-.

, titin'of my' present inyention clean-r5 The 'cmnpensatiugdovice 53 -is-for.the purpose of 3 g meehamsm. htheimotor.

-uloug with it. on uni-m nt of the,- shoulder the pull rod. The pull rod may be oper 6 ated by attaching a fixture 35 at the rear part of tlic switch box 25, as indicated in dotted lines,'thus, if space should not-per:

mit the use ofthe fixture 34 in the position shown therorl 27 may be cut off .in front to the same length as 26-ancl an attachment made as indicated at 35 at the rear. The switch-rod 26,]1as mounted thereon a pawl carrier 36, the rod 26 passin through the hole 37, in an extension 38, w 'ch is slotted at 39 and set screws 40 aroused to clamp the two. parts of. the extension 38 against therod26- r g In order tov guide the pawl carrier 36 as it is carried back-and forth by "the switch 9 .rod 26, two studs 41 and :42 are attached pinned to-the shaft 11 by pins 48 and 49. It is seen that as the switch rod 26 moves forward and back, the shaft ldgi's carried with it"or vice-verso. The pawl carrier 36 Jia'sa 'slot 50' within which ismounted a pawl 51, by incans of a'pii'ot screw passingthrough ,the. hole 1n the pawl carrier and the-hole 63 in the pawl; Mounted on the. pull rod 27' and dircctlyfover the pawl I e 51 is a device which I have called in my' previous applioation-heretofore mentioned,

as :r compensating device. This device is v howuin Fig. 'J hut since it is dc'sci'ilwd and claimed. in my previous application, it will he only hrlellyrefe'rredto hereand then only forthe purpose of makingthe operaallowing pull rod 27 to have a'certain movcpawl 51, It will now be seen that wheu'the" pull -rod 27 is operated, the pawl carrier 361s inovcd-alolur and the rod 26 is moved 54 ofthe .rouuwnsating. derive; engaging the notch of the pawl. ."lho extreme and of the ml] rod 27 ins-sesthrou h' the hole 60'- in' a :supfiortiuiz rnelnlwl wfili. .whiclnfis (-arriod on support'rods ,4] and 42 passing through the lad es"? und'j fiS, being ehumiedf to said rods hy suitable srtsrews 5!).

I will now describe the .omzration. if my doviee. the parts of \vhirh are shown in their normal orino|n-ruti\'clmsltlu'lls in Figs. 1 and 2.1 \Vlwn, it is .llvsil'ml to-start 'tlu-l engiuv. 'llw open-mm" mauipulales the intermediate levers running to the drivers seat (not shown) so as to produce a pull' on the rod 27. Since the compensating device rotary motion, thereby enabling the gear to readily find its way into engagement with the gear teethon the fly-wheel. The spring 18 and the collar 19 on the armature shaft extension 15 absorb theshoclc' of the-gear 21 as it goes into mesh with .the fly-wheel gear. As the gear 2i engages the gear on the fl )-\\'ll0tl, tllfl switch contacts .28 and 29 which are carried forward by the rods 26 and 27. go into engagement with the switch blades BO and 31 when the circuit through the electric motor is completed and the mo! 't ()l"\\'lll begin to crank the engine.

Should a tooth of the pinion meet a tooth of the fly-"wheel, either of which for any reason has become barred on the edge, the

"compensating de'vice-53 wilt'thea come into artion 'anr1 pillow the pnll'rod totem tin'ue;ji itsimovemen't iintil thejmot o'r circuit closed as -'sliuwii 'i'n dotted l nes in Fig; 13. The closing of-thefmotoi" circuit the "MP2? will cause gear 21 to' g o into'inesh with thejfly-wl'ieel as'describedl'in' my prei'ioi'is application but since 'itjsjonly collateralwith-my present iii'v-entio ,fui'ther description is'omil'ted.

(oincidei'it with themeshing o'f-the gear 2-1 with the fly-wheel and before the rod 27 reaches the endfotits movement", the 'nose fil of-tluflphwl 51 engages a}portiT n-ofthemo tor framig'sliglitly lower and betweenfguides (32iiiiil thisscrves'tot l'tth'e'niiisei'ilfof the pawlupward, relei'isin'githe"notch 551mm xthe shiiiilder 54 of the-eorniensa'tin device 'E'fil but by this tiiiie..the" eircuit through the 50 armaturei in ti r'uing holds the 'gear 21 'in electrical-motor has beencompleted and the mesh and therebyi iainta'ins the riidf-Qfi 'inits operative position. M'hen the eii-gine"starts under its'own pmverfth fly-Zwlieel turns .faster than the geiiigfil'l-and-oii account of the spiral splines '16, the geanz-l is carried 'out' of iiirsh 'with thefly-Iwbeel' or from the position shown in' Fig; 3 to that shown in Fi 1; The gear 21- when it disengi'iges from the Fly-wheel rarities ith it thefshziftli and likewise the pawl carrier 36 and f red 26,

thereby opening the [actor 'eii'euit' through the switch contautsZH and 29 even though the operator maystill have the pull rod 27 in its operated position. Tt is thus seen that the minimum amount of power is taken by the act of cranking the engine, since the time of consuming power from the storage battery iscontrolled by the engine and not by the operator. v

Should for any reason there be something the matter with the engine that it does not start, the parts ,uayremain in the position shown in Fig. 3 with the-exception of the pull rod 27, which on being released, returns to the position of Fig. 2 through the action of the spring 64 thereby opening circuit to the electric motor and stopping the action of cranking. As soon as the trouble has been fixed, the rod 27 can be pulled directly to the position of Fig. 4, when the electric motor is started anddisengagement will take place aspreviously described.

Onaccoi nt of my method of engaging the motor with the engine, it is not necessary to use a resistance in the armature circuit of the motor, as is generally done. This resistance often burns out, causing more or less trouble and I do away with this source a tit a'iiinoyance. :By "my method of engaging the driving gear with the fly-wheel, I pretion; My present llivtlltlflll is intended-as an improvement over'iny COIilPilhlOTl application, heretofore referred to, inthe method :of nio mting thedriving gear and 'the means for en a in' -and r'l'isen'nimn" theear with the flyewh'eel-jof the engine, togetherwith improved switching means.

It willlbeapparent to anyone skilled in the art that-numerous changes and altera- Hay i ng thus described myinventiom'what I claim is I jl )In. an apparatus of the. class? described,

' the combination; of an. cngine,. a rotatable member driven by said engine, aneleetric motor..liaving ats armature in a. substan vent clashing -of gears in the starting opera- Holly fixed aztiatpositiom'a source of power,

,means forapplying said source of power to Said ni tor, 'a ll() ll0W -S l1:\-ft.'f0! said motor armatureliaving an extension at one end, a

means passing tl roi|igli, sai d'hollow shaft and operated, by the sa'idpower applying means for causing said g'ear'wheel to engage with said engine rotatable. member 2. In an apparatus of'the class described,

therefor, said shaft having an extension atone end, a gear wheel-mounted on said ex- Jt-twa means .tonnecting in combination,

able armature source of power thereto. a hollow 'shaft for.

tension, an inner shaft within the hollow shaft and means associated with the inner shaft and operated by the said power applying means to cause said ear to engage said enginedriven member,-w i'en said inner shaft is operated.

In an app ratnsof the class described, in combination, an engine, a member driven by said engine, a source of power, a rotatable armature and means for applying the source of power thereto, a hollow shaft for supporting said armature and bearings therefor, said shaft having an extension at one end, spiral splines on said shaftextension, a. gear wheel adapted to move rotatably and longitudinally on' said splines, an

inner shaft within the hollow shaft, a slot in' said shaft extension substantially par-. allel' to said splinesand 'm'eanspassing through said slotfor .fastening said gear wheel to said innershaft and means foropcrating said inner shaft to cause said ear to engage with said en inedriven mem lier.

4. In an apparatus o t the class described, in combination, an engine, a member driven by said engine, a source of po\ver, a' rotatable arniat'nreand means for applying the source of power-thereto, a hollow shaft for supporting said jarmature' and bearings therefor, said shaft having 'an extension at one end, spiral splines onsaid shaft extension, :1 slot in saidhollow shaft between two of said splines, a shaft extension, a shaft within said hollow shaft, :1 pin' passing through saidgear and inner shaft and adapted to move in 'said slot, means for moving said inner shaft to carry said gear into engagement with said engine driven member and means on the end of said hollow shaft for absorbing the shock of said gear'as it engages with said engine driven member.

5, In an apparatus of the class-described, in combination, an engine, a member driven by said engine, a source ofpower, a rotatand means for applying the supporting said armature and bearings thereforrsaid shaft having an extension at one end, a gear' wheel mounted on said extension, ashaft within said hollow shaft, 'iid gear to said inner shaft, means for. moving said inner shaft longitudinally to-eause engagement of said gear with said enginedrivcn member, means common to both the gear and said hollow shaft for. holding the gear in engagement with said engine driven member while the saline is being rotated. said means also serving to ellcrt the release of said gear from said engine driven member at. a.- predeterminrds u-ed ol' tbe latter. I

In an appm'atus oltbe class jlth't'llllttl.

11.: engine, a rotatable memgear wheel mounted on said ber driven by said engine, an electric motor having an armature supported on a hollow shaft one end of which projects beyond its bearing, a secondfshaft supported within said hollow shaft, :1 driving gear on said hollow shaft extension and fastened to-said second shaft, means in said hollow shaft extension to allow said driving gear and second shaft to move longitiulinally and rotatably, a switch associated with said motor and means interconnecting said switch and said said two rotatable members but inner rotatable member. manually operable means for moving longitudinally tl ieinner' one of said rotatable members to cause said driving gear to engage with said first member, said manually operable means also serving to connect said source cfpowcr with the outer of said two rotatablejlnembers to start said engine.

8. In an apparatus of the class described, the combination of an engine, a rotatable member driven by said engine, a source of power, a-rotatable member driven from said sourceof power and means for applying said source of power to said rotatable member, a third'rotatable member within the second mentioned rotatable member, a driving gear onsaid second member, means for fastening the driving gear to the. third rotatable member whereny when said member is longitudinally moved said ear is cansedto' engage with the engine driven'rotatable member. 9. In an apparatus of the class described. in combination, an engine, a member driven by said engine, a source of power, two rotata-ble members one within the other, a gear wheel driyinglycon'nec outer of said two rotatable members; means for fastening said'gear wheel to, the inner of said two rotatablemembers, means for -n'ioving longitudinally the said inner member to move said gear wheel into engage meat with thc'cngine di-ivcn member. said source of power being adapted to operate on' the outer of said twomembers to start said engine.

10. In an apparatus of the class described; in combination, an engine, a rotatable membee driven by said engine, an electric motor having'an armature supported on 'a hollow shaft, one end ofwhich projects beyond its bearing. a second shaft supported within said hollow shaft, :1 geai.- (lrivingly associated'with said hollow shaft extension but rigidly fastened to said second shaft, means' ted with the cll -i yen rnemher when said engi 35 r-itsm 'll in combmatien, an engine, a member driven by said engine, a Source of'pewer, an elec tric nmlm" having a mtatnhharmature, a hollow shaftfm' said armature and hearings 'therefor, gzear wheel drivingLy connected to said armature shaft, a second shaft pasw mg thmugh said hnllhw shaftand opera tively connected tusaid gear wheel, a switch, connectingdevices between mid switch and said secoml-rotntahle shaft. :-said 'swileh heling adapted 'when operated to cause saidsecond slm'ftto move said gear wheel iulu engagement with said engine driven memher and also to close lhe cireuiL between mid source of pnwer and said nmlmyand l'ulrlh'er. :aeting- 1 upen the circuit Imln een the nmhn' and sourcenf-puwer when the engine slarls "under its own power. i 14. In an apparatus 20 applying said source of pow-e1: to said seem th combination of an engine; an (h-(inc .j-rotahable member a driving gear 'ca'rried y' unit r having an ni'malure, a mum-of lmwel' for said motor, and swilehing mechanism said-second rctut hle member,.n third rota blemernber mounted within saidjs'econdfl {mi a tatable'f-member, means;Employing-:1 ;I- -met .r.. said nmlmlmvinglan shafts, muzithi rd rotatable-member longit'ndii llyfto' Il II UJQ P other, the oulrr of said shuns cause silidQdriving gear torrngag he encarrying means 'adapled to lw--( oli||\-cle|'|: to 1 gin,(lriien, lyitafalgle..inemher, and queuing sa idjengine; the inner: of said slhlfls'adaptied common to bothfthc dri\'ing"gmliflamd:ihe' hp he moved epirally and axially with r second-rotatable, membef 1.0,]; sped;,tq saidgmterjahafl. Le carry -said means min geanin-wb king relationinfd engagemeni. ithlsaid engine for thedI'IVQ-LIifIOtzI tiI-IJIQ lneliilieifl ii'heniheeg 1 H ur m! described being lgurnedysziid n eejns plsovg emung iu, connect" the driving geiir iromfiihe .i, ar

.in said hollow shaft, to allowsaid gear' and second shaft to move rotatably and longitudinally, a witch mounteden said motor,

' said switchfhaving a pull rod and a switch 5" rod; said-switch rod beingoperatively connected to said second shaft, connectingider vices between said pulLand switch rods, whereby whensaid pull rod id aited said eai'is'caused .to engaige the rduithble memer on the, engine am lneans for disabling said connecting devices before said pull rod reaches the end of its movement whereby said switch rod is left under the control of said engine, for the pu ose descrihed- -11. In an appai'atuso the class deserilwd, the combination of an engine, a -rntntnhle membeidriven by said engine; a source of 1 ower,, a second --rotatable-. memb eli driven mm said sonrceof 'po'wernnd means in 15, lnana|i nugill the. rcnnhinalienof an, engine, a memhel lgy said engimi twe, 1 01a:huhlejmenk hin thentlw'r, the inner of said iplyingsaid source of power to Sillll In'enmpparptns of thee lg. 1 1 adapted Pier hpiigihldilhl]. the coinbiw Jon, of 'gm enginc espeet In line nulermemnfexn en by, it] enginl i3 1 ili'ij'ilullyi-llli)llHiQt] en the mile sou reemi :pmvet,

being 5nbsta-i tial l 'v free nn a xial. mm e- 5 aneli l erq fer nhaling; i'hflqiilfi, mentionedin any. l.0 'engagin eni;'jwiLlf sa id engine, ideela-i'eal windings mi the first mentioned one of said ewe"rotatable:inemhers, said uinlan-.4111 150mm Iming adaptial to co r.

..- sa.id means an, sery ngjnj d n I i to .s ajd'nimlingsje start xaid engine.- ..geenflinnitheengine'driyeif ne nher andto: 111,1 aliapp araturgefthe elasei described,

pent, nugang lyiyingly in ented on one of i l e. n eni hers ailapleill to conkneel. with the; engine driven menilmr nieans said two rotatable means-drivingly mounted on the-outer of said two rotatable members adapted to connect with the engine driven member, a switch, connecting devices between said switch and the inner rotatable member for moving the first mentioned means into con-' nection with said engine when said switch is operated, a source of power adapted to be connected by said switch to the outer of members to crank said engine.

19. In an apparatus of the class described,

the combination of an engine, a member driven by said engine, two rotatable members one within the other, means drivingly mounted on the outer of said two rotatable members adapted toconn'ect with the engine driven member, a switch, connecting devices between said switch andv the inner rotatable member for moving the first mentioned means into connection with said engine when said switch is operated, a source of power adapted to be connected by said switch to driven by said engine,

the outer of said two rotatable'members to crank said engine, said connecting devices adapted to be" disabled when connection is made with sa d engine, whereby whenjsa-id engine starts'under its own power, said source-of power is disconnected from the outer of said two rotatable members,

20. In apparatus of the class described, in combination, an engine, a rotatable member a source of power, two rotatable members in driving relation with each other, an armature winding upon .one of said two rotatable members, a gear 4 adapted to engage and drive said engine driven member, meansa'ssocmted with each of said two rota-table members for. causing said 1""ar to move longitudinally into mesh wi. the engine driven member, said means f:=-msl1i1ig a driving connection between said gear hem,

and one of the said two rotatable mema shock absorbing device moun'ted'upon onenf said two rotatable members, and 01).-

erablc means whereby the source of power isapphedjto the said armature iwmdm".

21. In an apparatus of the class descrlbed,

in combination, an engine, an engine driven two rotatable-' member, a source of power,

members adapted for Longitudinal and rotative movement relative to each other, a gear drivingly associated with one of the said two rotatable members but fixed to the other rotatable member, operable means for causing said driving gear to be moved longitudinally into engagement with said engine member, an armature winding mounted upon one of said two rotatable members, said operable means also serving to connect the said source of power to the armature winding, and a shock absorbing device mounted on one of the said rotatable members.

22. In combination, a non-self-starting engine, a self startingmotor having two rotatable shafts one within the other, the outer of said'shafts being adapted to be connected to said engine, 'a source of power for said -'motor,

switching mechanism for connecting the outer of said shafts to said engine, and for connecting-said power to said motor, operative means for drivingly connecting the inner shaft with the outer shaft, a compensating device associated with-said switching mechanism whereby a part of same may be moved independent of the other parts to apply power to said motor should said outer shaft in being connected to said engine meet with an obstruction, or the purpose ide scribed, v

23. In-an apparatus of the class described,

driven by said engine, a source of power, two rotatable members one disposedwithin the other, a gear wheel drivingly'mounted on the outer of said rotatable members but the combination of an engine, a member fastened to the inner of said members,'a

switching mechanism, connecting means be-' tween the switching mechanism and said inner rotatable member whereby when sa d 'SWItChIIIg mechan sm is operated to connect the source of power to said outer rotatable member for the purpose '0 actuating the same .said inner rotatable member is"act uuted to carry the gear wheel thereon into en gagem'ent with said engine driven member, means cooperating-between the said two rotatable members to efi'ect' a. release of said gear wheel from engagement with the .engine when the latter runs of. its own power,

and means associated with the switching.

mechanism to assist the last mentionedmeans in returning saidigear wheel,.-sw1tching mechanism, and connecting means to their normal inoperative position.

24. In an apparatusof the class described,

thecombination of an engine, .a member driven thereby, a source of power,.-a-rotatable member driven by; said source of power,

asecond rotatable member disposed within 1 the first rotatable'member and drivingly as- V sociate'd therewith, means secured to the second rotatable member adapted to engage said engine member, switch-having a pull rod and a switch rod, means whereby-when 21, force is exerted on the pull rod s'aid switch rod is moved. to connect the source of power to the first mentioned rotatable member and also said first mentioned. means iS moved to engage the engine member, and means f .1 "whereby when said force is removed geld.

pull rod is automatically returned to "1 ts mal position regardless of the position-j said switch rod. 10 In witness whereof, I afiix m' signatui'e.

- JULIUS H. RI HABDS. 

